Saturday is the 38th anniversary of Roe v. Wade -- the U.S. Supreme Court decision that legalized abortion.

One of the newest leaders in the pro-life movement is Abby Johnson, a former Planned Parenthood director in Texas, who was shocked after witnessing an abortion. She became pro-life in the fall of 2009.

Since then, Johnson has been traveling the country exposing the truth about Planned Parenthood and abortion. She told CBN News that while it's a tough battle, she's also encouraged.

"We are seeing more people out on the sidewalks praying and reaching out to women than we ever have before," Johnson said. "We are seeing more people leave the abortion industry than ever before. We are seeing a huge presence of pro-life youth."

"And even the president of NARAL commented on that, how nervous she is for the pro-choice movement because the majority of youth are pro-life," she added.

Johnson believes one of the most important strategies for the movement is strengthening the local presence at abortion clinics. It was one of the reasons she became increasingly uneasy while working at Planned Parenthood.

"The difference with being out on the sidewalk is that it puts it out in the open," Johnson added. "It puts the tragedy out in the open. You're reaching workers."

"You're reaching people in the community that just drive by that maybe never think of abortion," she continued. "But they can't help it, because you're standing there. And every time you're there, you're pricking the conscience of the people going into that clinic and the people that are driving by."

Meanwhile, the 38th Annual March for Life will be held in Washington, D.C., Monday.